BMW 1 2 Series F40 F45 Rear Ventilation Absorber Right O/S Air Duct 9315934

BMW 1 2 Series F40 F45 Rear Ventilation Absorber Right O/S Air Duct is an original component of the rear cabin ventilation system, designed for installation on the right side. This used component from the Air conditioning hoses, pipes and connectors category ensures proper airflow in the rear interior zone, supporting stable operation of the air conditioning system and passenger comfort.

Specifications and technical data

• SKU: 9315934
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9315934
• Substitutable numbers: 64229315934, 9315934, EM, 9315932
• Location on the vehicle: Rear, Right
• Category: A/C Hoses & Fittings

Purpose and function in the BMW air conditioning system

The described duct is a component of the rear ventilation system in the BMW 1 Series F40 and 2 Series F45, mounted on the right side of the vehicle. It is responsible for directing the airflow from the main air conditioning system to the rear of the cabin, which translates into even temperature distribution and improved travel comfort for rear-seat passengers.

Thanks to its precise fit for the specific F40/F45 body generation, the duct maintains the correct geometry and connection tightness, which limits flow losses and airflow noise. This is particularly important in modern air conditioning systems, where stable flow parameters affect temperature control efficiency and sensor operation.

Construction and mounting fit

The rear ventilation duct has been designed as an OEM BMW component, which means full compatibility with the vehicle's factory installation. The shape, mounting points, and connection diameters are adapted to the standard ventilation system, allowing for installation without the need for modifications or adapters.

Its placement in the rear zone, on the right side, allows for clear identification during service – the duct works with rear ventilation channels and interior trim elements. Proper positioning in the tunnel and behind the upholstery minimizes the risk of vibrations, rattles, and leaks that could reduce acoustic comfort in the cabin.

Benefits of using an original ventilation duct

Using an original rear ventilation duct in the BMW F40/F45 offers a number of practical benefits:

• Factory fit – maintaining the original geometry of the ventilation system and a secure connection with other installation components.
• Stable airflow – reducing pressure drops and improving the efficiency of the air conditioning in the rear of the cabin.
• Compatibility with interior trim – no collisions with upholstery, tunnels, or finishing elements.
• Consistency with other system components – the duct works with factory grilles, distributors, and noise dampeners.

A used OEM component is a sensible choice when the priority is maintaining the original air conditioning system design while optimizing repair costs.

Condition, verification, and service application

The duct comes from disassembly and is offered as a used part, which in workshop practice often provides a cost-effective solution for ventilation and air conditioning system repairs. Such components are particularly useful for:

• mechanical damage to ventilation channels (cracks, fractures, deformations),
• leaks causing a drop in rear ventilation efficiency,
• post-accident repairs in the rear part of the body,
• comprehensive interior restoration after flooding or interference with the installation.

The selection of the correct duct for a specific BMW F40/F45 version should always be verified by the OEM part number and interchangeable numbers in the technical specification to ensure full compatibility with the vehicle configuration.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of the air conditioning and ventilation zone in your BMW and need other elements from the same group, such as air conditioning hoses, pipes, or connectors, check the available parts in the BMW air conditioning hoses, pipes and connectors category.

When working on the air conditioning system – especially when interfering with the compressor, dryer, or other refrigerant circuit elements – it is worth familiarizing yourself with practical tips regarding diagnostics and safety. Detailed information can be found in the article Air conditioning compressor – symptoms of failure, causes, and safe replacement, which helps to better plan the service of the entire system.